Mac Address issue in VMware Image

Hi,

I have copied an existing image and changed the ip address in it. Evreything worked properly. But, when i tried connecting to internet its showing the below error:

*Adapter Ethernet0 may not have network connectivity.MAC address 00:0C:29:58:61:19 of adapter Ethernet0 is within the reserved address range or is in use by another virtual adapter on your system.*

+Adapter Ethernet0 may not have network connectivity....+

Pls help.